Column-mold.



R1. DES LAURIERS. COLUMN MOLD. APPLICATION FILED AUGJQ. 1918.

msmwa Patented 001:. 22, 1918'.

A a R I v 7 M11 f/"N;

% Z52 W em Z01 E 14 /36 r? .flwflaarzkm ALBERT J. DES LAURIERS,

OF ST. PAUL, MINNESOTA.

COLUMN-Mom.

Specificationof Letters Patent.

Patented Oct. 22, 1918.

Application filed August 19, 1918. Serial No. 250,476.

To all whom it may concern:

Be it known that I, ALBERT J DEs LAU- RIERS, a citizen of the UnitedStates, residing at St. Paul, in the county of Ramsey and State ofMinnesota, have invented certain new and useful Improvements in Column-Molds, of which the following is a specification.

This invention relates to improvements in column molds and particularlyto the type designed for use in casting concrete columns cylindrical oroval in cross section.

An object of the invention is to provide an improved mold havingcomparatively smooth inner wall surface effected by reducing to aminimum the number of rivet and bolt heads.

A further object of the invention is to provide an improved sectionalmold, the sections whereof are formed of single sheets of metal havingintegral cooperating flanges uniformly punched to render theminterchangeable.

The invention consists in the construction, combination, and arrangementof parts illustratcd in the drawings and hereinafter described andclaimed.

Figure l is a perspective view of the invention showing a verticalsection of a column mold with two circumferential sections joinedtogether.

Fig. 2 is a sectional view on line 2-2 of Fig. 1.

Figs. 3456 and 7 are diagrammatic end views of a circumferential moldsection showing the shape of the shell after each operation in theprocess of manufacture, and

Fig. 8 is a perspective view of a clamping ring.

Referring to Fig. 1, of the drawingsA and B represent respectively awide and nar- -row circumferential section of a cylindrical column moldjoined together by means of slotted bolts F in holes 9 in thecooperating flanges D the latter being radially disposed on thelongitudinal edges of the shell 3. The shell 3 extends at both endsbeyond the ends of the flanges and has notches 4 at its upper outercorners. The shell is suitably curved to form a round column, and is ofenlarged diameter at its top to form a bell end or collar 5 adapted totelescopingly re ceive the lower end of the next upper section, afragment of which is shown in dotted angle lines at C (Fig. 1) the innerfaces of the superimposed sections being flush. The sections are boltedtogether by means of bolts in' registering holes 6 at the top and bottomof each section. By offsetting the shell, as described in the foregoing,only one row of bolts is required at each end connection, it havinghitherto been the practice to connect the sections by separate bandsrequiring two rows of bolts. To facilitate manufacturing of the molds asmall space 7 between the ends of the angles D and the offset isprovidedfto afford clearance for a ridge on one of the die memberswithout which it would be impractical to bell the end of the shell closeto the flanges. A split clamping ring E of any suitable pattern, such asis shown in Fig. 8, fits between the ends of the flanges and is adaptedto clamp the assembled sections circumferentially to hold them incylindrical position.

' In Figs. 345-'6 and 7 is shown, step by step, the process of formingthe flanges D, which latter are bent in a brake on the longitudinaledges of the shell 3. I11 F ig. 3 the shell is shown bent to the desiredcurvature and acutely returned forming a leaning flange. In Fig. 5 theedges are shown returned flatly in Fig. 4 the edges are shown upon thesheet, a reinforcing member 8 hav- Fig. 6 the returned mg been inserted.In

member 8 is shown edge together with the shell, leaving a lateral leg 13overlying the member 8 and the shell.

The rectangular bolt holes 9 are thereafter punched as required. Inmolds of small diameter the reinforcing member 8 is omitted as shown inFig. 7. The flange D therefore comprises a main flange 11 and anintegral auxiliary flange 12 having a reinforcing angle member 8 betweenthem.

The pressure in the mold when filled with soft material is outward, asindicated by the arrows, placing the shell in tension. Obviously thereis a tendency to separate and bend the flanges along the line 10, thereinforcing angle member 8 and the auxiliary flange 12 being provided tooppose this tendency. Further, the internal pressure tends to shear theshell from the main flange at the bending line, (in the directionindicated by the arrows) the inner leg of the reinforckeel yeceive thisi ressure celumn molcl section of" 1, ie class c'e pzising an arcuatesheet hem edges bent outwardly to Eerie y clisposecl with EESQQCl? tothe eiietiex 05 said sheet each flange comprisa meiii inge anal anauxiliary flange seicl main flange having and, parallel t0 shat of thelaterally a; its i1 ee end into she eusei surfefce of sale main andauxiliary flanges i; holes '50? the pile .1 a eelizmii molcl section 0:?the class eemprisinp; gm ercuete sheet sent 5; is edges to form eeiellelone 5; main flanges, and e112;- eeaeli of said meiii flanges penillelismelierewitli said auxge being sent at an angle to overlie te sliee'eseicl main encl auziliesy Leg belt eoles in regisiesiiig releeezmLQlllfig the ecljoining seetien.

sine mold section of ee grisiiig an ereiiete s1: ee eaveelges i olclevloutwer y upon eeeli of said eclges a nee-iii Eases;

w ele member 0? molil section of the class eeserileeil eem sisiiig areinforcing eagle :ziiemeer an eieiieie slieee liming parallel edgesfelcleil e0 Eerie outwemlly ezeencliixg angles adapted i0 eevelop seiclrein-forcing" angle membei comprising an outwardly bent poi'tioiiiolfleel back over said. reinforcing angle membei eenferming to thefacial contour ilieieei, e215. bolt holes in registering relfiiifiilpiercing seicl reiniereing angle member and the fields oil sei l flangei 01 the piiipese set fioi ihi 5. In column melcl efthe cless eseribealcempi'isiilg eireiimfeienti l seeisieiis cylindrical seo'sieiis seiclyinclrieel see lens being seleseepingly eeunectible endwise wieh eachother to form x'enelecl column each said cireumiei'eniiei sectionseemprisiiig ercuete pleie lieviiig an integral oil;- "ffaldl'y extendingmge on each of is longitudinal edges, s eleee ezisendin beyond the endsof said (gages one of seiQ ext-earl ecl encls being Teensircumierenzielly outwardly ior a recess ie receive the end @113 ecljeeeq in 21 e01 seeeioe be connected.

